International Journal of Thermophysics最新文献

{"title":"Retraction Note: Development of a Numerical Model to Calculate Heat Transfer in a Cement-Based Material Incorporated with Expanded Perlite Filled with Aerogel","authors":"Honglin Zhang, Yong Tan, Ge Wang, Yao Nan, Liang Wang","doi":"10.1007/s10765-024-03400-9","DOIUrl":"10.1007/s10765-024-03400-9","url":null,"abstract":"","PeriodicalId":598,"journal":{"name":"International Journal of Thermophysics","volume":"45 7","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142413681","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Torsional Quartz-Crystal Viscometer","authors":"Carlos A. Nieto de Castro,&nbsp;Stephen M. Richardson,&nbsp;William A. Wakeham","doi":"10.1007/s10765-024-03389-1","DOIUrl":"10.1007/s10765-024-03389-1","url":null,"abstract":"<div><p>The paper describes the theory and practice associated with the torsional quartz-crystal viscometer for the measurement of the viscosity of Newtonian Fluids. It is an instrument that has been less often used than its quality merits, but it has the distinct advantages, shared with the vibrating-wire device, that it involves no bulk motion of fluid or a solid and that all measurements can be electrical. The temperature range that can be covered by the instrument is from 2 to 650 K and pressures have reached as much as 100 MPa. The review summarizes the most recent theory of the instrument and carefully sets out all of the many conditions that have to be satisfied by design so that a practical instrument conforms to the theory. Most of the conditions are readily satisfied. Two working equations are presented that could be used to evaluate the viscosity using the frequency at resonance of the crystal and the bandwidth of that resonance when the crystal is immersed in the fluid and <i>in vacuo</i>. It is explained that at present only one of these equations should be used for the evaluation. Several configurations of instruments that have been employed for measurements over a wide range of conditions are briefly described as well as the corrections necessary to operate the instrument with the highest accuracy. The overall relative uncertainty attainable with the instrument ranges from 0.005 to 0.02 at a 95% confidence level, depending upon the fluid density.</p></div>","PeriodicalId":598,"journal":{"name":"International Journal of Thermophysics","volume":"45 7","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10765-024-03389-1.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141500957","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Development of An Apparatus for the Directional Spectral Emissivity Measurement from 50 ℃ to 1000 ℃","authors":"Z. Y. Liu,&nbsp;J. Song,&nbsp;K. Yu,&nbsp;J. J. Zhou,&nbsp;G. R. Guo,&nbsp;X. P. Hao","doi":"10.1007/s10765-024-03393-5","DOIUrl":"10.1007/s10765-024-03393-5","url":null,"abstract":"<div><p>To realize precise directional spectral emissivity determination of solid materials under the atmosphere, an apparatus what covers the temperature region from 50 °C to 1000 °C and a spectral range of 3 μm–14 μm was developed. The measurement angle can be adjusted from 0° to 60° utilizing a stepper rotary stage. The reliability of the apparatus’s reliability was confirmed by measuring the spectral emissivity of a SiC sample at high temperatures. Furthermore, the normal spectral emissivity of SiC was investigated from 50 °C to 1000 °C, and the directional spectral emissivity at 600 °C and 800 °C was shown. The influence of temperature and measurement angle on the spectral emissivity of SiC was analyzed in detail. Additionally, the cause of the silicon dioxide film on the surface of SiC after high temperature heating and its influence on spectral emissivity were explored. Finally, a detailed analysis of the uncertainty components of the emissivity measurement under varying temperatures and wavelengths was performed, and the results showed that the uncertainty of the apparatus was better than 0.05 in its measurement range.</p></div>","PeriodicalId":598,"journal":{"name":"International Journal of Thermophysics","volume":"45 7","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141500959","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluation of Moisture Diffusivity from Pore Distribution Curves for a Ceramic Brick","authors":"Igor Medved’,&nbsp;Robert Černý","doi":"10.1007/s10765-024-03376-6","DOIUrl":"10.1007/s10765-024-03376-6","url":null,"abstract":"<div><p>The 1D moisture diffusivity of porous materials may strongly depend on the content of moisture in the materials, varying over an order of magnitude or more. In this paper we present a new model from which the diffusivity can be evaluated, using the pore size distribution and water absorption coefficient. We point out that this is a more efficient approach than the standard Boltzmann–Matano (BM) method, because measurements of pore curves and water absorption are much shorter and rather accurate compared to moisture profile experiments needed in the BM method. As an example, we apply our model to two samples of a ceramic brick for which experimental data on both pore curves and moisture profiles had been measured. A very good quantitative agreement in the diffusivity is obtained for early stage profiles. For later stages, however, the model predicts three to four times higher diffusivity than the BM method. The reasons for this discrepancy are discussed and further tasks to validate the effectiveness of the new model are proposed. We also compare our model with the pore models of Burdine and Mualem.</p></div>","PeriodicalId":598,"journal":{"name":"International Journal of Thermophysics","volume":"45 7","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10765-024-03376-6.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141500958","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Thermo-mechanical and Thermophysical Properties of Ferro-siliceous Sacrificial Concrete on Exposure to Elevated Temperatures","authors":"P. V. P. Moorthi,&nbsp;Anuj Kumar,&nbsp;Shyamprasad Karagadde,&nbsp;P. K. Baburajan,&nbsp;Anuj Kumar Deo,&nbsp;Arunkumar Sridharan,&nbsp;Prakash Nanthagopalan,&nbsp;S. V. Prabhu","doi":"10.1007/s10765-024-03391-7","DOIUrl":"10.1007/s10765-024-03391-7","url":null,"abstract":"<div><p>Heavy density concrete made of hematite-based aggregates commonly known as ferro-siliceous sacrificial concrete (FSSC) can be used effectively against radiation shielding in case of nuclear melt down. However, performance assessment of such concretes on exposure to elevated temperatures are not available widely. In the present study, thermo-mechanical and thermophysical properties of hematite-based FSSC concrete are evaluated on exposure to elevated temperatures. The porosity and water absorption capacity of FSSC are investigated on its exposure to higher temperatures ranging from 30 °C to 1000 °C. Similarly, various thermo-mechanical [compression, split tension, modulus of elasticity (MOE)] and thermophysical (specific heat, thermal conductivity, thermal diffusivity, and thermal effusivity) properties are evaluated on exposure to elevated temperatures. The mechanical properties of the concrete such as compression, split tension, MOE decrease monotonically with increase in the exposed temperature. Porosity and water absorption of the concrete increases with the increase in temperature. Relationship between damage and the exposed temperature can be described by Weibull model. Thermophysical property such as specific heat of the concrete increases, while thermal conductivity, thermal diffusivity and effusivity decrease with the increase in temperature. Correlations for the variation in thermal conductivity, specific heat and thermal diffusivity are proposed. The variations in the mechanical and thermophysical properties are explained through the porosity variations and correlation coefficient between porosity and various mechanical and thermophysical properties.</p></div>","PeriodicalId":598,"journal":{"name":"International Journal of Thermophysics","volume":"45 7","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141500956","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Exploring Density, Viscosity, and Friction Theory in the Interaction of Linalool (3,7-Dimethylocta-1,6-dien-3-ol) with 2-Alkanol","authors":"Zeinab Rafiee,&nbsp;Mohammad Almasi","doi":"10.1007/s10765-024-03392-6","DOIUrl":"10.1007/s10765-024-03392-6","url":null,"abstract":"<div><p>This investigation undertakes a thorough examination of the thermophysical properties of linalool (C₁₀H₁₈O) blended with a series of 2-alkanols (ranging from 2-propanol to 2-hexanol) across a temperature spectrum of 293.15 K to 323.15 K. The primary objective of this study is to elucidate the density and viscosity behavior of these binary systems. The experimental results reveal negative deviations from ideality in excess molar volume for linalool with 2-propanol up to 2-pentanol, and positive values for linalool with 2-hexanol, accompanied by negative viscosity deviations across all examined mixtures. The observed negative excess volume suggests the presence of strong intermolecular interactions between linalool and the 2-alkanols, which is indicative of the formation of hydrogen bonds in the mixtures. The positive values of excess molar volumes in linalool and 2-hexanol are indicative of the governing of steric hindrance effects on attractive intermolecular forces. Moreover, the Friction theory (<i>f</i>-<i>theory</i>) was utilized to model the viscosity of the binary mixtures, yielding an excellent concordance with the experimental data, with a maximum discrepancy of merely 2.25 % observed in the linalool + 2-pentanol system. This negligible deviation underscores the efficacy of the <i>f</i>-<i>theory</i> in accurately capturing the viscosity measurements, thereby validating its applicability in predicting the rheological behavior of such binary systems.</p></div>","PeriodicalId":598,"journal":{"name":"International Journal of Thermophysics","volume":"45 7","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141528816","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Bubble Point Measurements of cis-1,1,1,4,4,4-Hexafluorobutene [R-1336mzz(Z)] + trans-1,2-Dichloroethene [R-1130(E)] mixtures","authors":"Aaron J. Rowane,&nbsp;Stephanie L. Outcalt","doi":"10.1007/s10765-024-03388-2","DOIUrl":"10.1007/s10765-024-03388-2","url":null,"abstract":"<div><p>Saturation pressures of pure R-1336mzz(Z) and R-1130(E) and bubble point pressures of three R-1336mzz(Z)/1130(E) blends were measured from 265 K to 360 K. For each pure refrigerant or refrigerant blend, a total of twenty unique saturation pressures or bubble points were measured. In total 100 unique state points were obtained. Presently, no Helmholtz-energy-explicit type equation of state (EoS) is available for R-1130(E). While an extended corresponding states EoS for R-1130(E) is available to estimate the properties of the R-1336mzz(Z)/1130(E) blend, this model does not resolve the azeotropic behavior of the mixture. Therefore, the perturbed-chain statistical-associating fluid theory (PC-SAFT) EoS is used to model the vapor–liquid equilibria of the R-1336mzz(Z)/1130(E) blend. PC-SAFT model parameters are reported, and the overall performance of the model is characterized by deviations from the experimental data.</p></div>","PeriodicalId":598,"journal":{"name":"International Journal of Thermophysics","volume":"45 7","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10765-024-03388-2.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141351748","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Densities and Molar Volumes for Binary Solutions of Tri-iso-Amyl Phosphate and n-Dodecane in the Temperature Range of 283.15–363.15 K","authors":"Shekhar Kumar","doi":"10.1007/s10765-024-03384-6","DOIUrl":"10.1007/s10765-024-03384-6","url":null,"abstract":"<div><p>Tri-<i>n</i>-butyl phosphate (TBP) has remained workhorse of PUREX based nuclear recycle operations since 1956. However due to its associated disadvantages like third phase formation and tendency to react violently with nitric acid at elevated temperatures generated requirement of an alternate extractant for PUREX process. Tri-<i>iso</i>-amyl phosphate (TiAP) has better attributes than TBP on both the counts. Density of solutions is an important process parameter for design of equipment, process operations and control and safety analysis. In this work, experimental data on the density of binary solution of tri-<i>iso</i> amyl phosphate and <i>n</i>-dodecane are reported for several temperature levels. The related volumetric parameters were also estimated from experimental data as well as Kirkwood–Buff integrals. Derivative parameters like linear coefficients of preferential solvation <span>(delta_{ij(i ne j)}^{o})</span> and local mole fractions <span>(x_{ij(i ne j)})</span> at 298.15 K were also estimated and reported.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":598,"journal":{"name":"International Journal of Thermophysics","volume":"45 7","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10765-024-03384-6.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141350962","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Rayleigh–Benard Convection of Carbopol Yield Stress Fe3O4 Nanofluids Under Magnetic Field: An Experimental Investigation and ANN Modelling","authors":"M. A. Hassan,&nbsp;Rishikesh Kumar,&nbsp;N. H. Khan","doi":"10.1007/s10765-024-03390-8","DOIUrl":"10.1007/s10765-024-03390-8","url":null,"abstract":"<div><p>This study presents a comprehensive experimental investigation aimed at elucidating the influence of magnetic fields, nanoparticle concentration, and the presence of polymer on Rayleigh–Benard convection in yield stress nanofluids. The test fluid comprises Ultrez 30 polymeric powder and Iron oxide nanoparticles. Herschel–Bulkley's model is applied to capture the rheological behaviour. The concentration of both Ultrez 30 polymeric gel and Iron oxide nanoparticles varies from 0.05 % to 0.10 %. The in-house developed experimental set-up is exposed to the magnetic field in the 0 mT to 100 mT range. Without a magnetic field, heat transfer increases with the elevation of nanoparticle fraction in the fluid. However, in the presence of a magnetic field, the convection effect weakens as the nanoparticle concentration rises. Furthermore, an optimised artificial neural network (ANN) model featuring a single hidden layer with nine hidden neurons is presented to predict the Nusselt number.</p></div>","PeriodicalId":598,"journal":{"name":"International Journal of Thermophysics","volume":"45 7","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141353609","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Two-Phase Isochoric Heat Capacity, Phase Transition, and Theoretically Important Physical Parameters of Methyl Dodecanoate","authors":"R. G. Batyrova,&nbsp;N. V. Ibavov,&nbsp;S. M. Rasulov,&nbsp;I. M. Abdulagatov","doi":"10.1007/s10765-024-03386-4","DOIUrl":"10.1007/s10765-024-03386-4","url":null,"abstract":"&lt;div&gt;&lt;p&gt;The two-phase isochoric heat capacity (&lt;span&gt;(C_{{text{V2}}})&lt;/span&gt; &lt;i&gt;VT&lt;/i&gt;), liquid–gas phase transition (&lt;span&gt;(T_{text{S}})&lt;/span&gt;,&lt;span&gt;(rho_{{text{s}}}^{prime })&lt;/span&gt;), vapor-pressure (&lt;span&gt;(P_{{text{S}}})&lt;/span&gt;,&lt;span&gt;(T_{text{S}})&lt;/span&gt;), and thermal -pressure coefficient &lt;span&gt;(left( {dP_{text{S}} /dT} right))&lt;/span&gt; of methyl dodecanoate, a key biofuels component, have been measured along nine liquid isochores between (180.90 and 845.31) kg·m&lt;sup&gt;−3&lt;/sup&gt; and three near-critical liquid and vapor (180.90, 234.52, and 374.11) kg·m&lt;sup&gt;−3&lt;/sup&gt; isochores. The temperature range covers the liquid–vapor phase transition temperature &lt;span&gt;(T_{text{S}} left( rho right))&lt;/span&gt; for each measured isochore to near the thermal decomposition temperature, 450 K. The measurements were performed using a high-temperature and high-pressure, nearly constant-volume adiabatic calorimeter previously used for the measurements of the &lt;span&gt;(C_{text{V}})&lt;/span&gt; &lt;i&gt;VT&lt;/i&gt; relationship of biofuel components in the two- and single-phase region. The combined expanded uncertainty of the density (&lt;i&gt;ρ&lt;/i&gt;), temperature (&lt;i&gt;T&lt;/i&gt;), and isochoric heat capacity (&lt;span&gt;(C_{{text{V2}}})&lt;/span&gt;) measurements at the 95% confidence level with a coverage factor of &lt;i&gt;k&lt;/i&gt; = 2 is estimated to be 0.15%, 15 mK, and 2%, respectively. The isochoric heat capacity discontinuity point was used as the criteria of the liquid–gas phase transition temperature, &lt;span&gt;(T_{{text{S}}})&lt;/span&gt;. For each experimental liquid isochore, most measurements were concentrated in the immediate vicinity of the liquid–gas phase transition temperature (&lt;span&gt;(T_{{text{S}}})&lt;/span&gt;) to precisely determine the phase boundary properties (&lt;span&gt;(rho_{{text{S}}})&lt;/span&gt;, &lt;span&gt;(T_{{text{S}}})&lt;/span&gt;, &lt;span&gt;(C_{text{V1}})&lt;/span&gt;, and &lt;span&gt;(C_{text{V2}})&lt;/span&gt;) using an isochoric heat -capacity abrupt-behavior technique. For nine liquid isochores between (745.16 and 845.31) kg·m&lt;sup&gt;−3&lt;/sup&gt; the phase transition temperatures (&lt;span&gt;(T_{{text{S}}})&lt;/span&gt;) were experimentally determined. For two vapor (180.90 and 234.52) kg·m&lt;sup&gt;−3&lt;/sup&gt; and liquid near-critical (374.11) kg·m&lt;sup&gt;−3&lt;/sup&gt; isochores, for which the transition temperatures are very high (above the thermal decomposition temperature, 473 K), we failed to reach the phase-transition temperatures, &lt;span&gt;(T_{{text{S}}})&lt;/span&gt;, because for these isochores the thermal decomposition of methyl dodecanoate occurs before reaching the phase transition temperature (above 673 K). The measured two-phase (&lt;span&gt;(C_{text{V2}})&lt;/span&gt;) isochoric heat capacities as a function of specific volume (&lt;i&gt;V&lt;/i&gt;) along the various isotherms (below 473 K) were used to accurately estimate the values of the second temperature derivatives of chemical potential, &lt;span&gt;(frac{{{text{d}}^{{2}} mu }}{{{text{d}}T^{2} }})&lt;/span&gt;, and vapour-pressure,&lt;span&gt;(frac{{{text{d}}^{2} P_{{text{S}}} }}{{{text{d}}T^{2} }})&lt;/span&gt;, based on the Yang–Yang theoretical relation. The","PeriodicalId":598,"journal":{"name":"International Journal of Thermophysics","volume":"45 7","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141361649","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}